Does anyone know the newsletter/blog posts that caused these employees to retaliate like this? Obviously no matter what they said this behavior is 100% not acce

Does anyone know the newsletter/blog posts that caused these employees to retaliate like this? Obviously no matter what they said this behavior is 100% not acceptable under any circumstances; these 6 employees are definitely in psychopath territory. However, I'm curious as to what exactly triggered this kind of retaliation.